/*
clsquare - closed loop simulation system
Copyright (c) 2004, Neuroinformatics Group, Prof. Dr. Martin Riedmiller,
University of Osnabrueck

Author: Stephan Timmer

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
   * Neither the name of the <ORGANIZATION> nor the names of its
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE. 
*/

#ifndef _DISCRETIZERH_
#define _DISCRETIZERH_
  
#include <vector>
#include "setdef.h"
  
/** Implements a procedure for discretizing multidimensional real valued points into single integers
 *  by using a simple grid.
 * \author Stephan Timmer*/
class Discretizer {
 public:
  
  /** constructs a grid.
   * \param workingArea: space to be covered by the grid
   * \param resolution: resolution of grid in every dimension */
  Discretizer(SetDef workingArea,vector<int> resolution);
  
  /** constructs a grid.
   * \param workingArea: space to be covered by the grid
   * \param resolution: resolution of grid in every dimension */
  Discretizer(SetDef workingArea,int* resolution);
  
  /** gets the grid cell (id) of a certain point in space.
   * All grid cells have an integer as an id.
   * \param point: point in space.
   * \return id of grid cell */
  int getCellId(vector<double> point);
  
  /** gets the proportions of a certain cell.
      \param cell: cell id
      \return proportions of cell */
  SetDef getCellProportions(int cell);
  
  /** gets number of cells in grid. */
  int getSize();
  
  /** prints grid. 
   * prints the proportions of all grid cells and the cell id's.
   * \param offset for cell-ids */
  void print(int offset);
  
 private:
  
  /** dimension of input space. */
  int dimension;
  
  /** size of grid. */
  int size;

  /** resolution of grid. */
  vector<int> resolution;
  
  /** helps to compute discrete representation of points in grid. */
  vector<int> gridMult;
  
  /** input Space. */
  SetDef workingArea;
  
};

#endif
